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-rw-r--r--fs/ext4/ext4_jbd2.h6
-rw-r--r--fs/ext4/mballoc.c8
-rw-r--r--fs/ext4/super.c7
3 files changed, 14 insertions, 7 deletions
diff --git a/fs/ext4/ext4_jbd2.h b/fs/ext4/ext4_jbd2.h
index 4c216b1bf20..aeed0bac693 100644
--- a/fs/ext4/ext4_jbd2.h
+++ b/fs/ext4/ext4_jbd2.h
@@ -194,16 +194,20 @@ static inline void ext4_journal_callback_add(handle_t *handle,
* ext4_journal_callback_del: delete a registered callback
* @handle: active journal transaction handle on which callback was registered
* @jce: registered journal callback entry to unregister
+ * Return true if object was sucessfully removed
*/
-static inline void ext4_journal_callback_del(handle_t *handle,
+static inline bool ext4_journal_callback_try_del(handle_t *handle,
struct ext4_journal_cb_entry *jce)
{
+ bool deleted;
struct ext4_sb_info *sbi =
EXT4_SB(handle->h_transaction->t_journal->j_private);
spin_lock(&sbi->s_md_lock);
+ deleted = !list_empty(&jce->jce_list);
list_del_init(&jce->jce_list);
spin_unlock(&sbi->s_md_lock);
+ return deleted;
}
int
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 36c82a39d03..580aada3d1b 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -4423,11 +4423,11 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
node = rb_prev(new_node);
if (node) {
entry = rb_entry(node, struct ext4_free_data, efd_node);
- if (can_merge(entry, new_entry)) {
+ if (can_merge(entry, new_entry) &&
+ ext4_journal_callback_try_del(handle, &entry->efd_jce)) {
new_entry->efd_start_cluster = entry->efd_start_cluster;
new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
- ext4_journal_callback_del(handle, &entry->efd_jce);
kmem_cache_free(ext4_free_data_cachep, entry);
}
}
@@ -4435,10 +4435,10 @@ ext4_mb_free_metadata(handle_t *handle, struct ext4_buddy *e4b,
node = rb_next(new_node);
if (node) {
entry = rb_entry(node, struct ext4_free_data, efd_node);
- if (can_merge(new_entry, entry)) {
+ if (can_merge(new_entry, entry) &&
+ ext4_journal_callback_try_del(handle, &entry->efd_jce)) {
new_entry->efd_count += entry->efd_count;
rb_erase(node, &(db->bb_free_root));
- ext4_journal_callback_del(handle, &entry->efd_jce);
kmem_cache_free(ext4_free_data_cachep, entry);
}
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 5d6d5357812..67ae9e332d4 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -353,10 +353,13 @@ static void ext4_journal_commit_callback(journal_t *journal, transaction_t *txn)
struct super_block *sb = journal->j_private;
struct ext4_sb_info *sbi = EXT4_SB(sb);
int error = is_journal_aborted(journal);
- struct ext4_journal_cb_entry *jce, *tmp;
+ struct ext4_journal_cb_entry *jce;
+ BUG_ON(txn->t_state == T_FINISHED);
spin_lock(&sbi->s_md_lock);
- list_for_each_entry_safe(jce, tmp, &txn->t_private_list, jce_list) {
+ while (!list_empty(&txn->t_private_list)) {
+ jce = list_entry(txn->t_private_list.next,
+ struct ext4_journal_cb_entry, jce_list);
list_del_init(&jce->jce_list);
spin_unlock(&sbi->s_md_lock);
jce->jce_func(sb, jce, error);